2023
DOI: 10.1002/marc.202300065
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Review on Cell Structure Regulation and Performances Improvement of Porous Poly(Lactic Acid)

Abstract: Recent advances in the cell structure regulation and performances improvement of porous poly(lactic acid) materials (PPMs) are systematically reviewed in this feature article. First, the typical processing methods, including template method, non‐solvent induced phase separation, freeze–drying, and supercritical CO2 foaming, of PPMs are introduced emphatically. Their various cell morphologies by different processing methods are summarized: finger–like, honeycomb–like, fiber–like, through cell, open cell, closed… Show more

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Cited by 9 publications
(5 citation statements)
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“…Several strategies were developed to improve the PLA melt strength, including the use of chain extenders to create a branched molecular structure [107,[243][244][245][246], monomer composition [247][248][249], the blending with other polymers [250,251], and the addition of additives or fillers [92,252,253]. Hou et al [254] published a feature article that reviews the recent advances to improve the performance and the cell structure of PLA foams.…”
Section: Poly (Lactic Acid) (Pla)mentioning
confidence: 99%
“…Several strategies were developed to improve the PLA melt strength, including the use of chain extenders to create a branched molecular structure [107,[243][244][245][246], monomer composition [247][248][249], the blending with other polymers [250,251], and the addition of additives or fillers [92,252,253]. Hou et al [254] published a feature article that reviews the recent advances to improve the performance and the cell structure of PLA foams.…”
Section: Poly (Lactic Acid) (Pla)mentioning
confidence: 99%
“…30 However, the PLA matrix has weak strength and is susceptible to collapse during pore formation, which is not easy to maintain the orderly arrangement of the pore structure. 21 Fortunately, mixing poly(L-lactide) (PLLA) and poly(Dlactide) (PDLA), which are enantiomeric to each other, could generate stereocomplex crystals (SCs) with tighter stacking of molecular chains by an interpenetrating and alternating alignment. 31 SCs could convert some polymers that are difficult to crystallize or amorphous to an easily crystallized state, thus significantly improving the crystallinity.…”
Section: ■ Introductionmentioning
confidence: 99%
“…Shish-kebab crystals were newly constructed by pre-stretching PLA blocks, spontaneously limiting the following CO 2 foaming process to fulfill PLA foam orientation enhancement . However, the PLA matrix has weak strength and is susceptible to collapse during pore formation, which is not easy to maintain the orderly arrangement of the pore structure …”
Section: Introductionmentioning
confidence: 99%
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